drm/amd/display: add on demand pipe merge logic for dcn2+

[linux-2.6-microblaze.git] / drivers / gpu / drm / amd / display / dc / dcn20 / dcn20_resource.c

diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
index e25ed62..a673952 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
@@ -1671,7 +1671,7 @@ static void acquire_dsc(struct resource_context *res_ctx,
                }
 }
 
-static void release_dsc(struct resource_context *res_ctx,
+void dcn20_release_dsc(struct resource_context *res_ctx,
                        const struct resource_pool *pool,
                        struct display_stream_compressor **dsc)
 {
@@ -1731,7 +1731,7 @@ static enum dc_status remove_dsc_from_stream_resource(struct dc *dc,
                        pipe_ctx = &new_ctx->res_ctx.pipe_ctx[i];
 
                        if (pipe_ctx->stream_res.dsc)
-                               release_dsc(&new_ctx->res_ctx, dc->res_pool, &pipe_ctx->stream_res.dsc);
+                               dcn20_release_dsc(&new_ctx->res_ctx, dc->res_pool, &pipe_ctx->stream_res.dsc);
                }
        }
 
@@ -2502,7 +2502,7 @@ struct pipe_ctx *dcn20_find_secondary_pipe(struct dc *dc,
        return secondary_pipe;
 }
 
-void dcn20_merge_pipes_for_validate(
+static void dcn20_merge_pipes_for_validate(
                struct dc *dc,
                struct dc_state *context)
 {
@@ -2527,7 +2527,7 @@ void dcn20_merge_pipes_for_validate(
                        odm_pipe->prev_odm_pipe = NULL;
                        odm_pipe->next_odm_pipe = NULL;
                        if (odm_pipe->stream_res.dsc)
-                               release_dsc(&context->res_ctx, dc->res_pool, &odm_pipe->stream_res.dsc);
+                               dcn20_release_dsc(&context->res_ctx, dc->res_pool, &odm_pipe->stream_res.dsc);
                        /* Clear plane_res and stream_res */
                        memset(&odm_pipe->plane_res, 0, sizeof(odm_pipe->plane_res));
                        memset(&odm_pipe->stream_res, 0, sizeof(odm_pipe->stream_res));
@@ -2565,7 +2565,8 @@ int dcn20_validate_apply_pipe_split_flags(
                struct dc *dc,
                struct dc_state *context,
                int vlevel,
-               bool *split)
+               bool *split,
+               bool *merge)
 {
        int i, pipe_idx, vlevel_split;
        int plane_count = 0;
@@ -2609,11 +2610,12 @@ int dcn20_validate_apply_pipe_split_flags(
        /* Split loop sets which pipe should be split based on dml outputs and dc flags */
        for (i = 0, pipe_idx = 0; i < dc->res_pool->pipe_count; i++) {
                struct pipe_ctx *pipe = &context->res_ctx.pipe_ctx[i];
+               int pipe_plane = context->bw_ctx.dml.vba.pipe_plane[pipe_idx];
 
                if (!context->res_ctx.pipe_ctx[i].stream)
                        continue;
 
-               if (force_split || context->bw_ctx.dml.vba.NoOfDPP[vlevel][context->bw_ctx.dml.vba.maxMpcComb][pipe_idx] > 1)
+               if (force_split || context->bw_ctx.dml.vba.NoOfDPP[vlevel][context->bw_ctx.dml.vba.maxMpcComb][pipe_plane] > 1)
                        split[i] = true;
                if ((pipe->stream->view_format ==
                                VIEW_3D_FORMAT_SIDE_BY_SIDE ||
@@ -2626,10 +2628,44 @@ int dcn20_validate_apply_pipe_split_flags(
                        split[i] = true;
                if (dc->debug.force_odm_combine & (1 << pipe->stream_res.tg->inst)) {
                        split[i] = true;
-                       context->bw_ctx.dml.vba.ODMCombineEnablePerState[vlevel][pipe_idx] = dm_odm_combine_mode_2to1;
+                       context->bw_ctx.dml.vba.ODMCombineEnablePerState[vlevel][pipe_plane] = dm_odm_combine_mode_2to1;
                }
-               context->bw_ctx.dml.vba.ODMCombineEnabled[pipe_idx] =
-                       context->bw_ctx.dml.vba.ODMCombineEnablePerState[vlevel][pipe_idx];
+               context->bw_ctx.dml.vba.ODMCombineEnabled[pipe_plane] =
+                       context->bw_ctx.dml.vba.ODMCombineEnablePerState[vlevel][pipe_plane];
+
+               if (pipe->prev_odm_pipe && context->bw_ctx.dml.vba.ODMCombineEnabled[pipe_plane] != dm_odm_combine_mode_disabled) {
+                       /*Already split odm pipe tree, don't try to split again*/
+                       split[i] = false;
+                       split[pipe->prev_odm_pipe->pipe_idx] = false;
+               } else if (pipe->top_pipe && pipe->plane_state == pipe->top_pipe->plane_state
+                               && context->bw_ctx.dml.vba.ODMCombineEnabled[pipe_plane] == dm_odm_combine_mode_disabled) {
+                       /*Already split mpc tree, don't try to split again, assumes only 2x mpc combine*/
+                       split[i] = false;
+                       split[pipe->top_pipe->pipe_idx] = false;
+               } else if (pipe->prev_odm_pipe || (pipe->top_pipe && pipe->plane_state == pipe->top_pipe->plane_state)) {
+                       if (split[i] == false) {
+                               /*Exiting mpc/odm combine*/
+                               merge[i] = true;
+                               if (pipe->prev_odm_pipe) {
+                                       ASSERT(0); /*should not actually happen yet*/
+                                       merge[pipe->prev_odm_pipe->pipe_idx] = true;
+                               } else
+                                       merge[pipe->top_pipe->pipe_idx] = true;
+                       } else {
+                               /*Transition from mpc combine to odm combine or vice versa*/
+                               ASSERT(0); /*should not actually happen yet*/
+                               split[i] = true;
+                               merge[i] = true;
+                               if (pipe->prev_odm_pipe) {
+                                       split[pipe->prev_odm_pipe->pipe_idx] = true;
+                                       merge[pipe->prev_odm_pipe->pipe_idx] = true;
+                               } else {
+                                       split[pipe->top_pipe->pipe_idx] = true;
+                                       merge[pipe->top_pipe->pipe_idx] = true;
+                               }
+                       }
+               }
+
                /* Adjust dppclk when split is forced, do not bother with dispclk */
                if (split[i] && context->bw_ctx.dml.vba.NoOfDPP[vlevel][context->bw_ctx.dml.vba.maxMpcComb][pipe_idx] == 1)
                        context->bw_ctx.dml.vba.RequiredDPPCLK[vlevel][context->bw_ctx.dml.vba.maxMpcComb][pipe_idx] /= 2;
@@ -2671,7 +2707,7 @@ bool dcn20_fast_validate_bw(
        if (vlevel > context->bw_ctx.dml.soc.num_states)
                goto validate_fail;
 
-       vlevel = dcn20_validate_apply_pipe_split_flags(dc, context, vlevel, split);
+       vlevel = dcn20_validate_apply_pipe_split_flags(dc, context, vlevel, split, NULL);
 
        /*initialize pipe_just_split_from to invalid idx*/
        for (i = 0; i < MAX_PIPES; i++)